fix(codeql): switch language matrix to 'actions' (no JS/TS in repo) (#17)

CodeQL was pinned to language: javascript-typescript on a repo with no
JS/TS source files, so the analyze job failed with a configuration error
every run — blocking all Dependabot PRs.

Same root cause as IJ.jl#6 (and the same fix applied to JuliaKids.jl#7,
PRComms.jl#7, etc.). Switches to �ctions, which scans the workflow files
every repo has.

Going forward: a workflow_audit rule will be added to hypatia to flag
any codeql.yml whose language matrix doesn't match the repo's actual
source languages.

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

Author: hyperpolymath

.github/workflows/codeql.yml

@@ -22,7 +22,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - language: javascript-typescript
+          - language: actions
             build-mode: none
 
     steps: